<template>
  <div class="f-menu" :style="{width:$store.state.asideWidth}">
    <el-menu :default-active="defaultActive" unique-opened="true"  :collapse="isCollapse"  default-active="2" class="border-0" 
    @select="handleSelect" :collapse-transition="false">
      <template v-for="(item, index) in asideMenus" :key="index">
          <!--一级菜单通常用来管理和展示，并不实现跳转-->
        <el-sub-menu v-if="item.child && item.child.length > 0" :index="item.name">
          <template #title>
            <el-icon>
              <component :is="item.icon"></component>
            </el-icon>
            <span>{{ item.name }}</span>
          </template>

          <!--二级菜单才是实现真正的跳转--->
          <el-menu-item v-for="(item2,index2) in item.child" :key="index2" :index="item2.frontpath">
            <el-icon>
              <component :is="item2.icon"></component>
            </el-icon>
            <span>{{ item2.name }}</span>
          </el-menu-item>

        </el-sub-menu>


        <el-menu-item v-else :index="item.frontpath">
          <el-icon>
            <component :is="item.icon"></component>
          </el-icon>
          <span>{{ item.name }}</span>
        </el-menu-item>
      </template>
    </el-menu>
  </div>
</template>

<script setup>
import { useStore } from 'vuex'
import { computed,ref } from 'vue'
import { useRouter,useRoute,onBeforeRouteUpdate } from 'vue-router'

const router = useRouter()
const store = useStore()
const route = useRoute()


//默认选中--当前路由路径--刷新的时候菜单也是展开的
const defaultActive = ref(route.path)

//监听路由变化
onBeforeRouteUpdate((to,from)=>{
  defaultActive.value = to.path
})

//是否折叠菜单
const isCollapse = computed(()=>!(store.state.asideWidth == '250px'))

//所有的菜单栏
const asideMenus = computed(()=>store.state.menus)


const handleSelect = (e)=>{
  router.push(e)
}
</script>

<style>
.f-menu {
  transition: all 0.2s;
  top: 64px;
  bottom: 0;
  left: 0;
  overflow-y: auto;
  overflow-x: hidden;
  @apply shadow-md fixed bg-light-50;
}

.f-menu::-webkit-scrollbar{
  width: 0px;
 }
</style>